Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
git clone --depth 1 https://github.com/HelloRuru/claude-memory-engineWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/commands/helloruru/claude-memory-engine/compact-guide)<a href="https://agentmods.dev/commands/helloruru/claude-memory-engine/compact-guide"><img src="https://agentmods.dev/badge/commands/helloruru/claude-memory-engine/compact-guide/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/commands/helloruru/claude-memory-engine/compact-guide"><img src="https://agentmods.dev/badge/commands/helloruru/claude-memory-engine/compact-guide.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00000 | $0.00248 |
| Opus 5.5 | $0.00000 | $0.00099 |
| Sonnet 5.5 | $0.00000 | $0.00050 |
| Haiku 4.5 | $0.00000 | $0.00025 |
Grade A, and why
compact-guide scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
/compact-guide -- Smart Context Compression Guide
Help decide when to use /compact based on the current conversation state.
When to Compact
| Situation | Compact? | Why |
|---|---|---|
| Research/exploration done, ready to build | Yes | Research context is large; the plan is what matters |
| Planning done, starting to code | Yes | Plan is already in TodoWrite or a file |
| Debug session finished | Yes | Debug logs pollute the next task's context |
| Switching to a completely different task | Yes | Clear irrelevant context |
| Deployment done, starting new feature | Yes | Deployment logs aren't needed anymore |
When NOT to Compact
| Situation | Why |
|---|---|
| In the middle of writing code | Lose variable names, file paths, partial state |
| Debugging an unresolved issue | Lose error messages and attempted solutions |
| Multi-file refactor in progress | Forget which files still need changes |
| Just read an important doc, about to reference it | Doc content gets summarized away |
Auto-Suggest
When context usage exceeds 60%, proactively suggest whether compacting is appropriate based on the current task state.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 27 lines · 0 tokens per session scan A aebc85ca1efc
compact-guide is a command published in the GitHub repository HelloRuru/claude-memory-engine (134 stars, last pushed 5mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 248 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other commands, from other repositories
context-stats
Display context window usage and token statistics.
sync
Session bootstrap - read project context, restore saved state, show status. Quick orientation with optional deep dive.
handoff-continue
Create a handoff document and automatically spawn a new Claude session in a Zellij pane to continue the work seamlessly.
handoff
Create a comprehensive handoff document when your context window is getting low. This document captures everything needed to continue work seamlessly in a new session.
pull-learnings
Pulls shared organization patterns into local org-patterns.toon.
run
Execute prompt(s) from ./prompts/ with automatic archiving - for structured prompt-based work.